Xhtbmtal-cohbijstion etoote



E. F. O'H'AVER.

INTERNALl COMBUSTION ENGINE.

APPLICATION FILED DEC. 5, 19H5.

Patented May`27, 1919..

2 SHEETS-SHEET I.

E. F. OHAVER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FlLED DEC-5,19%.

LSJ. Patented May 27, 1919.

2 SHEETS-SHEET 2.

EDWARD FCS WEAVER, F CARLISLE, INDIANA.

INTERNAL-CQMBUSTION ENGENE.

Specification ot Letters Patent.

Patented May 2"?, 1913?.

Application led December 5, 1916. Serial No. 135,131.y

ters Patent of the United States, No.

1,17 6,4181, granted to me on March 21, 1916.

rll`l1e object of the present invention is to provide a new and improved rotary internal combustion engine arranged to produce any desired number of explosions in the combustion chamber at each revolution of the rotor, or t0 have a continuous or constant combustion in the working chamber with a view to permit of developingV more or less power as required at the time for a given load. Another object is to permit the use of gasolene, kerosene or other liquid fuel as the motive agent.

inv order to accomplish vthe desired result, use is made of means for producingr and delivering a predetermined plurality of charges into the working chamber of the engine durin each revolution of the rotor.

A practica embodiment of the invention is represented in the accompanyingdrawings forming a art of this specification, in which similar c aracters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the rotary en ne;

ig. 2 is a similar view of the same with parts in section;

Fig. 3 is a sectional plan view of the saine on the line 3-3 of Fig. 1;

Fig. 4 is a lan view of the pressure supply and ignition chamber. the airchamber and thegas chamber and the means for settin the valves in the as and air chambers;

llgig. 5 is an enlargel perspective view ot the cams controlling the valves used for connecting the air an gas chambers with the pressure supply and ignition chamber; and

Fig. 6 is a cross section of the engine cylinder on line 6-6 of Fig. 1. n 0

The cylinder 10 of the engine is provided with a suitable base 11 for supporting the en 'ne on a suitable foundation. In the cylin er 10 rotates a rotor 12 having its shaft 13 journaled in suitable beai'ings 1t, and the rotor 12 has its rim preferably made in U- shape or recessed in its peripheral tace to provide an annular working chamber 15 (see Figs. 2 and 6) in which extends a piston 16 integral with the bottom and sides of the rim and in Contact at its outer end with the inner surface of the cylinder 10. lnto the working chamber 15 are adapted to pass abutment arms 17 ot' an abutment wheel 13 having a shaft 19 journaled in suitable bearings arranged on a. casinaf 20 attached to or forming part of the cylin er 10.- rlflie piston head 13 is adapted to engage the arm 17 in position at the time in the working chamber 15 to impart an intermittent rotary motion 'to the wheel 18 to allow the piston head to pass the said arm.

A pressure supply and ignition chamber opens into the working chamber 15 adjacent one side of the casing 20, and this chamber 25 is provided with an ignition device 26 of any approved construction. lThe .pressure supply and ignition chamber 25 is connected by ports 27 and 28 with an air supply chamber 29 and a fuel supply chamber 30. rlfhe air chamber 29 is provided with an air inlet pipe 31, and the fuel chamber 30 is provided with a suitable supply pipe 32. v rlihe air pipe 31 is connected with a compressed air reservoir or the like for supplyin compressed air to the air chamber 29. e air pipe 31 is provided with a spring-pressed regulating valve 33 connected with a discharge pipe 34 to allow escape of excess air pressure. The tension of the spring 35 of the valve 33 can be increased or diminished by various means, such, for instance, as by adjusting the screw cap 36 on hich rests the outer end of the spring 35. '1 e as pipe 32 is connected with aV s supply un er pressure and is rovideoa with an adjustable spring-presse regulating valve 37 and an outlet pipe 38 similar to the one above described in reference to the air pipe 31. By the arrangement described the pressure of the air and the gas in the chambers 29 and vr'30 can be varied to insure the formation of a proper explosive mixture in the chamber 25.

Within the chambers 29 and 30 are mounted to turn cylindrical valves 40 and t1, of which the valve 40 is provided at opposite sides with ports 42, 13 adapted to register with the pipe 31 and the port 27, respeclil@ tively. Similar ports 43, 44 are arranged in thev valve 40` and are adapted to register with the supply pipe 32 and the port 28, respectively. The stems 45 and 46 of the valves 40 and 41 extend to the top of the chambers 29 and 3Q, and on the outer end of the stem 45 is arranged a pointer 47 adapted to indicate on a graduatlon 48 marked on the top of the chamber 29. The outer end of the stem 46 is provided with a pointer 49 indicating on a graduation 50 marked on the top of the chamber 30. 1t is understood that by the use of the pointers 47 and 49 the operator can turn the valves 40 and 41 so as to set the corresponding ports 40a, 42 and 43, 44 relative to the pipes 31, 32 and the ports 27, 28 with a view to admit more or less air and as to the pressure supply and ignition cham er 25.

The ports 27 and 28 are opened and closed by valves and 61v provided with valve stems 62, 63 connected with each other at their outer ends by a crossbar 64 on which is journaled a friction roller 65 adapted `to engage the peripheral face of either of the cams 66, 67 and 68 fastened together side by side and mounted to rotate with and to slide on a shaft by the use of a keyway and key 69, as plainly indicated in Figs. 2 and 3. The shaft 7 0 rotates in unison with the engine shaft 13, as hereinafter more fully explained. As shown, the cam 66 is provided with four cam surfaces spaced equal distances apart, and the cam 67 is provided with siX Cam surfaces spaced equal distances apart, and the cam 68 is preferably in the form of a disk. The connected cams 66, 67 and 68 are provided with a shifting collar 71 engaged by the fork of a shifting lever 72 under the control of the operator for shifting the connected cams 66,

67 and 68 on the shaft 70 with a view toy move the peripheral face of either of the said cams 66, 67 or 68 in engagement with the friction roller 65. The valve stems 62 and 63 are pressed on by springs 73, 74 to hold the friction roller 65 in Contact with the peripheral face of the corresponding cam 66, 67 or 68 in active position at the time relative to the friction roller 65.

One outer end of the shaft 70 is provided with a sprocket wheel around which passes a sprocket chain 81 also passing around a sprocket chain 82 secured on the engine-shaft 13. The sprocket chain 81 also passes around a sprocket wheel 83 forming part of a locking device for holding the abutment wheel 18 against rotation until the piston head 16 nears the arm 17 in position. at the time in the working chamber 15, and then the abutment wheel 18 is automatically unlocked to allow the piston head 16 to turn the abutment wheel 18. The sprocket wheel 83 of this locking wheel is provided with a cam lug 84 adapted to engage a springpressed bolt 85 mounted to slide in a suitable bearing 86 attached to or forming part of the cylinder 10. .The bolt 85 is adapted to engage one of a series of notches 8T formed on the peripheral face of a wheel 88 secured on the shaft 19 outside of the casing 20. The sprocket wheels 80, 82 and 83 are the same in size to rotate in unison with the engine shaft 13.

When the motor is runningY then at each revolution of the sprocket wheel 8.3 the lug 84 moves the bolt 85 out of locking engagement with the corresponding notch 87 of the wheel 88 at the time the piston head 16 nears the abutment in active position at the time in the chamber 15, and when the piston 16 has given the abutment wheel 18 a quarter turn then the lug 84 engages the next following notch 87 thus locking the abutment wheel in place for the time being. The abutment wheel 18 is preferably provided with four arms spaced equidistantly apart and of which one extends radially into the working chamber 15 while the others are Within the casing, as plainly shown in Fig. 2. An exhaust pipe 90 leads from the cylinder 10 adjacent the side of the casing 20 opposite the one at which the chamber 25 is located so that the products of combustion in the front of the piston head 16 can escape to a suitable place of discharge.

The operation is as follows:

lVhen the cam 66 is in operative position relative to the friction wheel 65, as shown in Fig. 3, then fourexplosive charges are successively passed into the pressure supply and ignition chamber 25 by the corresponding opening and closing of the valves 60 and 61, and hence four explosions take place in the working chamber 15 during each revolution of the rotor12. It is understood that the first explosion takes place in the working chamber 15 at the time the parts are in the position shown in Fig. 2, that is, with the piston 16 immediately beyond the entrance of the chamber 25 into the working chamber 15; the second explosion takes place after the rotor 12 has made a quarter revolution; the third explosion takes place when the piston. has made a half revolution; and the fourth explosion takes place at the time the rotor has made three-quarters of a revolution; and during the next quarter revolution the piston 12 returns to the original position, shown in F ig. 2, and the abovedescribed operation is repeated. VVh'en it is desired to increase the number of explosions in the working chamber 15 during one revolution of the rotor 12, then the operator, by manipulating the shifting fork 72 moves the connected cams 66, 67, 68 from the right to the left until the peripheral face of the cam 67 is in engagement with the friction roller 65. The valves 60 and 61 are now monies nected cams 66, 67, 68 are shifted farther from the right to the left until the periph- -eral face of the cam 68 is in register with the friction roller 65. When this takes place the valves and 61 remain open and a continuous flow of the explosive mixture into the chamber and the working chamber 15 takes place, and as this mixture is ignited a continuous pressure is exerted against the piston 16 of the' rotor 12.

From the foregoing it will be seen that according to the load more or less impulses may be given to the rotor during one revolution thereof.

lt will also be noticed that by changing the position of the valves i0 and #il any desired mixture of the air and the gas may be had to insure proper combustion, that is, gasolene, kerosene or other fuel may be used as a motive agent.

Although l have shown a tour-face cam 66 and a six-face cam 67, ll do not limit myself to this particular number of cams, as only one such cam or more than two such cams may be employed in addition to the continuous cam 68; and the cams 66 and 6i' may be provided with more or less cani faces than four or six to insure the production of a corresponding number of charges and explosions for each stroke of the rotor.

lt is understood that the ignition device 26, produces a spark for each charge passing in the chamber .25 to insure ignition of such charge.

lt is further understood that direct pipe connections with the ports 27 and 2S of the chambers 25 are madei in case it is desired to change to external pressure, and in this case the combustion accessories shown and described are dispensed with.

Having thus described my invention, l claim as new and desire to secure by Letters Patent:-

1. The method of generating power in explosive engines which comprises expanding a plurality of separate portions ot hot combustion gases successively in impelling relation to a movable motor element and eliminating; carbon deposit therefrom, consisting in feeding separate charges oit com-- pressed air and ai hydrocarbon to the' exl plosion chamber' for simultaneous carburetion and 'combustion and regulating the supply of air and hydrocarbon by means of overiiow valves.

2. lin a rotary interna combustion engine, a cylinder, a rotor therein ing with the cylinder a Working cha a single ignition device in said ivo. chamber and a feed hai/'iny ually controlled means for delivering successively a predetermined number of charges into the working chamber.

ln a rotary internal combustion engine, aI cylinder, a rotor mounted to turn therein and forming with the cylinder an annular working chamber, a single ignition chamber communicating with the working chamber, the rotor having a piston head, a movable abutment in the said working chamber, and a charge-feeding mechanism having manually controlled means for feeding a plurality of charges successively into the said working chamber between the said piston head and the said abutment at each revolution of the rotor. y

l. ln a rotary internal combustion engine, a cylinder, a rotor mounted to turn therein and forming with the Cylinder an annular working chamber, the rotor having a piston head, a movable abutment in the said working chamber, a pressure supply and ignition chamber opening into the said Working chamber, a gas pressure chamber connected with a gas supply and with the said pressure supply and ignition cham-- ber, valves controlling the connections be tween the said chambers, and actuating means for the said valves to open and close the same a number of times during each revolution of: the rotor.

5. in a rotary internal combustion engine,

' a cylinder, a rotor mounted to turn therein and forming with the cylinder an annular Working chamber, the rotor having a piston head, a movable abutment in the said Worlc ing chamber, a pressure supply and ignition chamber opening into the said Working chamber, a gas pressure chamber connected with a gas supply and with the said pressure supply and ignition chamber, an air pressure chamber connected with the said pressure supply an'd ignition chamber, valves controiling the connections between the said chambers, a cam shaft rotating in unison with the said rotor, and a plurali-ty of different cams movable on the said cam shaft and each adapted to be movef'i into operative position relative to the said valves to actuate the same in unison and plurality of times for each revolution of tbc rotor.

6. lin rotary internal combustion engine, a cylinder, a rotor mounted to turn therein and forming with the cylinder an annular working chamber, the rotor having a piston head, a movable abutment in the said workctiarnber, a premura suppiy and ignition chamber opening into the said Working rabe?, a gas pressure chamber connected a suppiy with the said presscre supply and ignition chamber, an air 1 with said chamber,

the .said chambers, a shaft rotating in unison with the said rotor, a plurality of disks slidable on the said shaft and `of which sundry are provided With dierent numbers of oa-rnvsurfaces and one of the disks is circular, and means-under the control of an operator and engaging the said disks to shift any of the disks into operative position relative to the said valves.

7. In an v internal combustion engine, means for feeding separate charges of com pressed air and a hydrocarbon to a common point for carburetion and combustion, overflow valves controlling said feed means, and means for regulating said overflow Valves whereby the ratio of oxygen to carbon may be changed at the point of mixture.

8. In a rotary internal combustion engine, a cylinder, a rotor mounted to turn therein and to form with the cylinder an annular working chamber .and a piston head in such working chamber, a movable abutment in said Working chamber, a combined pressure supply and ignition chamber opening into said Working chamber, a gas pressure chamber connected With a gas supply and With the said pressure supply and ignition chamber,l valves controlling the connection between said chambers7 actuating means for the said Valves to open and close the same a number of times during each revolution of the rotor, overflow valves lcontrolling the admission of the constituents of the eXplosive mixture, and springs for regulating said overflow valves whereby the ratio of oxygen to carbon at the mixing point may be altered.

EDWARD FRANCIS OHAVER. 

